Steam-trap.



J. M. BURBY.

STEAM'TRAP.

APPLIGATION HLBD JULY a, 1910.

UNITED STATES PATENT oFFIeE.

JOHN M. BURBY, or ASTORIA, NEW YORK, AssIGNoR or ONEHALF To FRITZ MUSEE,

or CHICAGO, ILLINOIS.

STEAM-TRAP.

To all whom it may concern: v

Be it. known that-'1, JOHN M. BURBY, a citizen of the United States, and a resident of Astoria, Long Island, county of Queens,

and State o f'New York, have invented certain new and useful Improvements in Steam- Traps, of which the following is a full,

- clear, and exact specication, reference being -'had to' the accompanying drawings, loivherein* 'y Figure 1 is a front elevation, partly sec 'tional view, of a Steam trap constructedac-- cording to my invention; Fig. -2 a crosssectionalviewthereof on line 2-2 indicated in Fig. 1; Fig. 33a side-view; and Fig. 4 a front ,viewy of a modified construction ofthe device connecting the valve' operating gear with the stem of thevalve. My invention relates to steamengineering appliances and 'consists'of the herein' shown and described improvements in the construction of 'steam traps, ,whereby, loss fof steam,

by blowing is Safely and surely prevented'- under all conditions, theoperatingparts ofv the steam trap'` being made adjustable and arranged to permit such adjustment or regulation at all times.- according tothe conditions and 4circumstances of the' Service for which the steam trap is employed, and

ent and thereby the loss of action of the' steam trap avoided. The clogging of the valve, or any other cause, interfering with the effective operation of the trap is readily vremedied Withouteven disturbing its operations; it does not necessitate. its being dis connected from the steampipe and taken apart*which procedure is necessary with the steam traps heretofore in use. The casing of my improved steam trap, designated 1 in the drawings, is L-shaped, the extension being made upwardly to pro-` vide a space for maintaining the Water in the casing, above the level of inlet 2 so as 66 to prevent live steam from entering into the Specication of Letters Patent. I Ptentedec, 20,1910, Application filed my e, 1910. serial No. 570,125.

prevent any pressure being exerted upon the.

float, a vent-cock 5 is set in the top of the casing to relievc such pressure from time to time, or at times when'observatio'ns are` made of the'operations of the trap, though the said vent-cock may as well be left open Vce al1-the time. In the outlet pipe 1,5,"1setin.v i

the side Wall of the casing l atthe'bottom thereof, a valve 11, set therein'in casing'12 .controls the outflow of the Water from the trap. Qn theend of the rock-shaftA 6, set 1n bearlng 7, which projectsthrough the' side wall of the casingV l and the stuing box v8, the two-armed lever 9 isrigidly "sc'liredy7,-.v

and another lever, 10,l is rigidly secured -to -its interior-ly projectigend.v The ioat 4 is pivotally attached to the free end of lever .10. vThus the rock-shaft' and the levers 9 and 10 constitute a crank and the float 4 The upper end of' post c is looped and the Y' l l lever 17 is passed lthrough the loop. The stein 16 of the valve 11 passes through the base a of'franie 13, and the stuffing box 14,

and a bifurcated head (l, secured to its end,

is pivotally connected to lever 17. The other end of this lever is pivotally connected by link 18 to the free end of-lever 9. By means of the compound lever. composed of levers 9 and 17 and of the link 18,"the oat 4 is made to operate the valve.v ,For adjusting the valve operating gear, a lurality .off J`holes are provided in the 'ends of) its length may be varied by setting the pivots connecting itlwith'levers 9 and 17 accordingly, and holes 21 are provided in the loop of post c, forsetting in .a stop-pin against which the lever 17 abutsinits up.-

ward motion. By those means, the pointat;

whiehvthe valve 11 is opened, land also-th extent of its lift, are determined.'

The described gear for operating the valve 11 by the movements of the oat 4, is designed with the objectin view, 1st to sulficiently multiply the force, created by the buoyancy of the float, to operate the valve;

and 2d to time and Vary, increase or decrease, the discharge of the water from the.l

only trap. 'The first object is attained by making lever 9 so much shorter than lever 10, whereon the float '4 acts, and by combining the lever 17 with lever 9 and with the stem 16 of A5 the'valve, in the manner shown and described. l The second object is attained by making'the described valve gear adjustable sothe; extent and also the timing ofy the start and 'termination of the motions of the valvell, are regulated.

The float 4 is actuated by the rising and falling ofthe level of Water in the trap 'casing and the etliciency Aof the trap,'as means for preventing 'waste of steam, depends notupon maintaining the water in the caslng at such a level as will eifectivelyseal the inlet 2 against the entry of any steam from pipe 3 into the'trap, by also upon ef'- fectinf 'a discharge of all water from the 2o trap azbove the .level required to be -mainta'ihed therein for sealing the inlet, andnot .,more. To this', end the gear operating the- ,"valve 11 mus-t be regulated or'adjusted'aecordlng to `the requirements of the particular apparatus in connection with whichv the trap is used. A trap adjusted to an ap -paratus, wherein a nearly steady pressure of' fifteen pounds is maintained, would not operate satisfactorily if connected to some other apparatus, wherein the steam pressure would be moreor less, orvarybetween distant limits.

The described mechanism to not only discharge all surplus water of condensation, but also enables' the trap to be adjusted to safely keep the steam, in the pipe 1n any apparatus, using low or high, or con-v stant or varying steam pressure. The

i higher'lor more iuctuating the lpressure is,

the longer must the opemng of the outlet 40 valve be delayed and thequicker its closing.

Of course, the adjustment must be made by the attendant in charge ofthe apparatus; the mechanism will not adjust itself automatically, and the attendant must observe the working vot the trap during this period of adjustment'. To enabi'e him to observe the iiuctuations in thelevel ofthe water in the trap casing, the gage-22 is provided, connectinfr with the interior of the casing-'at or '50 near the, bottom thereof and at or '.'near the top of the airispace in me extended portion of the casing. A mark on the glass tube of the gage like the one designated c inthe.

drawing, may be made to indi ate the level at which the water in the trap casi'n' should be maintained. If the water falls be ow this level, it shows that the valve is held open too long, and to remedy this` the connection l between levers 9'and l7 must lt extended and viceversa. If the wateris discharged too abruptly or rapidly, or if more water is discharged than necessary to reduce it to the required'level, the extent of the opening of the valve may be reduced by limiting the extent to which the valve may be opened.

lhis is done by inserting'a stop-pin into one of the-holes 21 in post c of the valve gear frame, to stop the upward motion Vof lever 17, before' the valve 11` is4 fully opened. The balancing weight 23, adjustablysecured on lever 9, serves in the position, shown in Fig'l of the drawing, to assist the'iioat to open the valve, but it may also be'used' on the other arm-of the lever 9'to assist in elosessential and maybe omitted.

In Figs.l 3 and 4 a modified construction of the valve operating mechanism is shown, in which the post c of the valve frame is omitted, the stem 16 of the valve is screwthreaded, and a loo ed. head 'is secured thereon. The top o thehead d is tapped ,for theA set screw 24 and by screwing the head d farther onto the stem 16 and'screwing in the set screw 24 into thehead, the opening and closing of the valve ing the valve. VThis balancing weight is notl sol ay be timed and the'eiftent of the opening o the val've increased or reduced.

The arrangement of the valve, and of 'its' operatingmechanism, onthe outside of the casing, gives readyaccess to these operating parts of the trap for adjustment, and results also in the great advantage of, my

as were .heretofore known, in which the v'alve and its operating mechanism are l'ocated Within the casing. Traps of such conto be disconnected for"clea'ning, whereas, to discharge whatever sediment may acc'umuf late inthe casing of niy is only necessary-to 'disconnect link'18 either. lever 9 or 17, whereupon valve 11 may beopened and held open by lifting lever 17. The pressure of the steam then blows the improved trap as compared'with such trapsA struction must beiopened andmay also have loo *provedl tra?, it

rom

Water, and all sedimentwithit, out ofthe A casin I c arm as my inventlon:

1. A steam trap, comprising a casing, an

inlet in the casing, adapted for connection with the steam pipe; one part of thesaid casing being extended above the level of the inlet; av" utlet at the bottom of the cas-v ing; an outlet pipe, communicating with the outlet; a Valve set intheoutletpipe exteriorly of the steam trap; a roek-shaft set transversely in the casing; a lever rigidlyV an outlet pipe, communicating with the out- 1 let; ai valve set 'in the outlet pipe exteriorly of the steam trap; agage communicating hwith the casing at or near the bottoni thereof, and at or near the-to i of the extended 5 part thereof; zi'roek-Slmt set trnnsverselyV in the -easing; a'lever rigidly connected to the rock-shaft inside of the casing; a. float connected to the free end ot the lever; and

, an Aadjustable compound lever, operatively l0 connected to the vulve and liz-wing one meinbei` rigidly connected to the roclr-sliziftlg snbstantizilly as herein shown' :1nd described.

inlet in the casing, adapted `or connection A ilvitli the' ste'ani pipe; one pzut. of thesaid easing being extended ebove the level of the inlet.; an outlet at. the bottom of the'easingfan outlet pipe, con'nnnnicnting with the outlet; a valve set in the outlet pipe exterioxzly of the steam tijip; :i rock-shzrltl set .transversely 1n the easing.: :i lever rigidly -connected to the rock-Shaft inside of the cz'ising; u ot'connccted to the free endof the lever;-a second lever rigidly connected to the roekfelrft on the outside of the casing; a {P'veal'ff-:fo'r operating the valve, and a link, a4d- ]ustgbly onnedting the valve operating geur it .the'freeend of the leve'r secured to the rock-shaft on the outside ofthe easing; substantially-:is herein shown and described.

4. A steam trap, comprising a casing, an inlet in the ca sing,.adpted for connection with the steam pipe;A one part of the said casing being extended above the level of the inlet.; an outlebat the bottom of the ca'sing; :in outlet pipe, communicating' with the outlet; :i valve. set inthe outlet pipe exteriorly of the isteam trap; -a' gage :ommunicating with. the easing at ornear the bottom thereof, :1nd at or near the top of the extended lever. rigidly connected to the rock-shaft on the outside of .the easin'v; u gear for operating the v'alve, and a. link, adjust'bly con` necting the valve operating gear with the freeend of the lever secured to the, llock slm ft on the outsidefth ca sin ';`s ut sta n.- tially as herein sl1own.an'dfde ri JOHN 

